Pump-operating mechanism.



P. G. NOWATSKE.

PUMP OPERATING MECHANISM.

APPLICATION FILED 00131, 1912.

1,077,290. Patented N014, 191s.

COLUMBIA PLANOCIRAP 00.. WASHINGTON, D c.

PAU o.'ivovva''rsKn, or MUKWONA'GO, WISCONSIN.

PUMP-OPERATING MECHANISM.

' To all whom it may concern Be it known that 1, PAUL C. Nowa'rsnn, acltizen of the United States, I'QSlCllIlg at Mukwonago, in the county ofWaukesha,

Sta-te of lV-isconsin, have invented certain new and usefulImprovementsin Pump-Opcrating Mechanism; and I do hereby declare thefollowing tobe a full, clear, and exact description of theinvention,such as will enable others Skilled in the art to which it appertains tomake and use the same.

This invention has relationto novel and useful improvements in pumps andmore par ticularly to an improved drive mechanism therefor. j Theprimary object of the invention is evolved in. the provision of a drivemechae nism in which the piston has connection with a vertically movablerack while a pin-j ion or gear is rotatably drivento engageandreciprocate the rack whereby a longer stroke may be imparted to. thepump piston with comparatively little or less power than is required byan ordinary crank or eccentric operated pump.

Another object of the invention is to provide a rotatable drive shaftadapted for lateral sliding movement whereby a pinion carried on itsinner end will continuously move around a novel form of rack member soas to convert a rotary motion of the drive shaft, driven from anysuitable source, into a vertical reciprocating motion of the pump rod orpiston.

lVith the above and other objects in view, the invention consists ofcertain combinations and arrangements of parts as will be hereinaftermore fully described, claimed and illustrated in the accompanyingdrawings, in which:

Figure 1 is a front elevation of a pump having my improved drivemechanism connected thereto. Fig. 2 is a central vertical sectional viewtaken on the line 22 of Fig. 1. Fig. 3 is a top plan view of the device.Fig. t is a horizontal sectional view taken on the line 41: of Fig. 1.Fig. 5 is a horizontal sectional view taken on the line 55 of Fig. 1.Fig. 6 is a detail sectional view showing one of the teeth of the rackbar.

In illustrating the practical embodiment of the invention there is shownthe upper portion or head of a pump 10 having the usual piston, notshown, working therein and connected to the piston rod 11 to which itSpecification of Letters Patent.

- Application filed October 31, 1912.

Serial No. 728,926.

is desired to transmit reciprocable movement. avoid thezgreatdisadvantages caused'by-the use of the ordinary crank disk or eccentriccommonly used inpumps, whereby-the power necessary foroperating the sameis consid Patented'Nov. a, was.

For this; purpose and in order to" erably increased and the stroke ofthe piston shortened, I provide-a casting embodying a supporting head 12which is secured to the .pump cylinder 10 by set screws 13.

Formed integral with the supportinghead 12 is an upright 14 carryingat'itsr'upp'er end a horizontally disposed guide framei 15 of ,open formandwhich overhangs the pump as illustrated. These parts are formed as asingle casting together with opposed side braces 16 which rigidlysupport the guide frame for receiving the working partsand sustaining.the jars incident to its operation in working the pump.

Detachably connected to the upper end of the pistonrod' by means of aset screw 17 is V the cross head 18 which is vertically movable in theguide frame and formed with opposite tongues 19movably engaged betweenthe rear portion of the frame and guide blocks 20 carried by andcoactingwith the latter to form guideways for receiving the cross head.The forward portion of the guide frame 15 is horizontally slotted toreceive a sliding bearing, 21 which rotatably supports a horizontaldrive shaft 22 in turn carrying on its inner end a pinion or gear 23. Arack bar 24: is secured to the forward face of the cross head and isformed of a plurality of rollers 25 having beveled heads 26 and eachroller is rotatably supported on a bolt 27 the head of which preventsdisplacement of the rollers in each instance. The drive shaft isrotatably supported outwardly of the slotted portion of the frame in anenlarged bearing 28 carried at the upper end of a stationary arm 29secured at its lower end to the supporting head and has a knuckle joint22 to permit transverse movement of the pinion in its travel around therotated by either of the means above described and by continuouslyrotating the pinion, the latter is caused to travel around the rack barand impart vertical reciprocable movement to the latter tocorrespondingly move the piston of the pump. Thus, it will be seen thatthe length of the rack bar may be increased so that the length of thestroke may be comparatively indefinitely increased whereby a greateramount of lifting force either in water or air pumps is accomplishedwith the same amount of power.

It will be observed that the knuckle or universal joint 22' is locatedinwardly of the shaft bearing 38 to permit swinging of the inner end ofthe shaft, the bearing being held rigid by side braces branching fromthe casting or frame 15. The inner or threaded ends of the bolts 27 arealso reduced in size where disposed through the crosshead 19 to providea shoulder 86 limiting the inward displacement of the bolts andpreventing the rollers from binding on the upright.

I claim:

1. In a pump, the combination with its cylinder and piston rod; of asupporting head mounted on the cylinder, a horizontal guide framesupported above the head, a rack bar detachably connected to the pistonrod and vertically movable in the frame, a

transversely shiftable drive shaft carried by the frame in mesh with therack bar and means for rotating the shaft to reciprocate the rack barand piston rod connected thereto.

2. The combination with a pump having a reciprocable piston and the pumprod; of a supporting head mounted on the pump, set screws operatingthrough said head to secure the same to the pump, a casting formedintegral with the head and comprising a rear upright, a horizontal frameat the upper end of the upright and braced to the sides of the head,said frame having a horizontally slotted forward portion, a rack barcomprising a plurality of spaced rollers, a cross head attached to thepump rod and supporting said rollers, said cross head being verticallyslidable in the frame, a shaft having a pinion at its inner end in meshwith the rack bar, an arm braced to the head and rotatably supportingthe shaft, a sliding bearing engaged in the slotted portion of the frameand rotatably receiving the shaft for transverse movement and means forrotating the shaft.

In testimony whereof, I 'aflix my signa' ture, in presence of twowitnesses.

PAUL C. NOWATSKE. Witnesses:

FRANK A. MOKINZIE, I. F. WEIR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

